Improvement in machines for forming lead and other pencils



EDWARD WEISSENBORN. Improvement in Machines for Forming Lead and other I K PGflCllS Patented April 2, 1872\ EDW 'A RD WEI SSEN BORN. Improvement in Machines for I Forming Lead and other Penc .No. 125,361 Patented April2,1872.

2 Sheets--S eet UNITED STATES- PATENT OFFICE.

EDWARD WEISSENBORN, OF HUDSON CITY, NEW JERSEY.

Specification forming part of Letters Patent No. 125,361, dated April 2, 1 872.

To all whom it may concern:

Be it known that I, EDWARD WEISSENBORN, of Hudson City, in the county of Hudson and State of New Jersey, have invented a new and Improved Machine for Forming Lead and other Pencils; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being had to the accom panying drawing which forms part of this specification. V

This invention has for its principal object the forming of polygonal wooden-covered lead and other pencils from cylindrical ones by compression. It is, designed more especially for the forming of such pencils after they have been stained or colored and varnished; but is also applicable to the forming of pencils in a less finished state. 7 It consists in a heated die, of the requisite form, and a plunger operating toforce the pencil through the die. It also consists in a novel combination of a feed-hopper, reciprocating plunger, fixed guide, and female die, whereby cylindrical pencils placed within the hopper may be fed down and forced through the die, thereby compressing the pencils into the desired form.

Referring to the accompanying drawing, Figure 1 represents a side view of a machine for this purpose constructed according to my invention, the heating-box, female die, fixed guide, and a portion of the feed-hopper being shown in section. Fig. 2 represents a plan view of the same. Fig. 3 is a transverse section of the hopper. Fig. 4 is a sectional view of the heating-box taken at right angles to that shown in Fig. l; and Fig. 5 is a full view of the forming-die.

Similar letters of reference indicate corresponding parts in the many figures.

A is a rectangular frame, of wood, cast met a], or other material. On the top of this frame, and to one side thereof, is secured a stationary bed-plate, B, which extends the full length of the frame. It is provided upon its outer edge, and along its central and forward portion, with a way, 0, of dovetailed formation in its transverse section, as shown in Fig. 3. Fitted to slide within this way 0 is a reciprocatin g carrier, D, which is operated by means of a connecting-rod or pitman, F, connecting with a crank-shaft, E, which is itself geared to a driving-shaft, E, so that, by the rotating or the latter, the carrier is made to traverse back and forth along the said way 0. This carrier D is armed in front with a cylindrical plunger, d, which is made to traverse a grooved block,

a, to pass through a tubular guide-way, c, and

to enter a female die, 6, for a purpose hereinafter explained. The said grooved block a is rigidly secured along its forward portion to theforward portion of the way 0, and has a semicylindrical groove in its upper side along its rear and centralportion, while upon the forward por-- tion of its upper side is arranged the aforesaid tubular guide-way 0. Perpendicularly arranged in front of this tubular guide-wayc is the aforesaid female die 0, so that the plungefd or a cylindrical object of similar size, upon being passed from the groove-block a and through the guide 0, will enter the said female die. Situated directly above the semicircular groove of the grooved block a is a feeding-hopper, H. This hopper is preferably of a form as represented in Figs. 1, 2, and 3, but may be of any suitable form for reception of the pencils, and so that pencils when placed therein, in the manner as shown, will, upon the withdrawal of the plunger d from the groove, drop, one at a time, into said groove, and, guided by the tubular guide-way 0, will be forced by the plunger, upon its return or advance movement, into and through the female die 0. This female die may consist of a sliding or a removable block, as shown in Fig. 5, and containing female dies of different numbers of angles; and it may even contain a circular opening or die of little less size than the pencils, so that cylindrical pencils, when desirable, may be forced through the same, and ejected therefrom still in a cylindrical form, but in a compressed and burnished condition. Said dies of course should be made with inwardly-tapering walls or sides, so as to readi- 1y admit the end of the pencil within their outer edges before compression begins. I is a steamchest or heating-box, situated close to the female die, so that, by the passage through it of heated air, or water, or steam, the said die may be heated, and the forming operation thereby assisted.

This invention may also serve for the further forming and polishing of. polygonal pencils which have been previously formed by a difdie e, tubular guide 0, grooved block a, plunferent process. ger d, and hopper H, constructed and arranged What is here claimed, and desired to be sefor operation substantially as herein described. cured by Letters Patent, is- EDW. WEISSENBORN.

1. The heated die 6 andthe plunger d, an Witnesses: ranged for operation substantially as and for FREDK. HAYNES, the purpose herein set forth. It. E. RABEAU.

' 2. A penciLformer, composed of the female I 

